Results 21 to 30 of about 99,487 (264)

Characterization of the bond quality of adhesive plates utilizing zero-group-velocity Lamb waves measured by a laser ultrasonics technique

open access: yesMechanical Engineering Journal, 2014
The bonding quality of an adhesive component was estimated using the frequency of zero-group-velocity (ZGV) Lamb waves, which can be generated and detected with a laser ultrasonic technique.
Hideo CHO, Yudai YAGUCHI, Hiroaki ITO
doaj   +1 more source

Air-coupled acoustic imaging with zero-group-velocity Lamb modes [PDF]

open access: yes, 2003
A Lamb wave resonance has been found that allows unusually efficient transmission of airborne sound waves through plates. This occurs at the zero-group-velocity point at the frequency minimum of the first-order symmetric (S1 ) Lamb mode. At this frequency,
Chimenti, Dale   +2 more
core   +5 more sources

The numerical analysis of the interaction between the low-order Lamb wave modes and surface breaking cracks

open access: yesMATEC Web of Conferences, 2019
Lamb waves, as one of the types of guided waves, are extensively used for inspecting large structures as well as for structure health monitoring applications.
Šofer Michal   +4 more
doaj   +1 more source

Investigation of Lamb Waves Propagation in Variable Stiffness Fiber Metal Laminated Plates Using Finite Element Method [PDF]

open access: yesمکانیک هوافضا, 2023
Lamb waves are mechanically guided waves that propagate through plates and shells, and their speed depends on the frequency. Nowadays, researchers use these waves to detect defects in structures.
Hadi Ghashochi-Bargh, Melina Hasani
doaj  

Three-dimensional edge waves in plates [PDF]

open access: yes, 2007
This paper describes the propagation of three-dimensional symmetric waves localized near the traction-free edge of a semi-infinite elastic plate with either traction-free or fixed faces.
Kaplunov, JD, Zernov, V
core   +1 more source

Low attenuation frequency bands for Lamb waves immersed in viscous fluids: theoretical analysis and experimental validation. [PDF]

open access: yes, 2013
6 páginas, 3 figuras. Proceedings of the 2013 International Congress on Ultrasonics (ICU 2013). 2-5 may 2013, SingaporeThe application of Lamb waves is a promising technique i n ultrasonic NDE techniques for inspection and fluid ...
Elvira Segura, Luis   +5 more
core   +1 more source

Ocean-excited plate waves in the Ross and Pine Island Glacier ice shelves [PDF]

open access: yes, 2018
© The Author(s), 2018. This article is distributed under the terms of the Creative Commons Attribution License. The definitive version was published in Journal of Glaciology 64 (2018): 730-744, doi:10.1017/jog.2018.66.Ice shelves play an important role ...
ASTER, RICHARD C   +6 more
core   +2 more sources

The Suitability of Using 3D PLA Printed Wedges for Ultrasonic Wave Propagation

open access: yesIEEE Access, 2020
This work studies the suitability of using 3D printed PLA wedges made through additive manufacturing to propagate Lamb waves in plate structures instead of using rather more expensive commercial wedges.
Antonio J. Balvantin   +5 more
doaj   +1 more source

Application of Nonlinear Lamb Wave Mixing Method for Residual Stress Measurement in Metal Plate

open access: yesChinese Journal of Mechanical Engineering, 2023
Harmonic nonlinear ultrasound can offer high sensitivity for residual stress measurements; however, it cannot be used for local stress measurements at a point in space and exhibits nonlinear distortions in the experimental system.
Jingpin Jiao   +5 more
doaj   +1 more source

Study of Lamb Waves for Non-Destructive Testing Behind Screens

open access: yesEPJ Web of Conferences, 2018
The inspection and control of sodium-cooled fast reactors (SFR) is a major issue for the nuclear industry. Ultrasonic solutions are under study because of the opacity of liquid sodium.
Kauffmann P.   +5 more
doaj   +1 more source

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